CN102408925B - High aromatic low-viscosity quenching and tempering oil for ethylene device - Google Patents
High aromatic low-viscosity quenching and tempering oil for ethylene device Download PDFInfo
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- CN102408925B CN102408925B CN201110302112.9A CN201110302112A CN102408925B CN 102408925 B CN102408925 B CN 102408925B CN 201110302112 A CN201110302112 A CN 201110302112A CN 102408925 B CN102408925 B CN 102408925B
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Abstract
The invention discloses a high aromatic low-viscosity quenching and tempering oil for ethylene device, comprising the following components by mass percentage: 70%-100% of catalyzed refined oil and 0%-30% of diesel oil. Compared to existing quenching and tempering oil for ethylene device, the quenching and tempering oil for ethylene device contains more aromatic and can play the role of quenching and tempering more effectively; when using, the invention can effectively mixed with quench oil, and there are lots of the effective components for reducing viscosity, the effect of reducing viscosity is obvious; simultaneously, the cost of the quenching and tempering oil for ethylene device is decreased, so as to obtain a better cost performance.
Description
Technical field
The present invention relates to a kind of ethylene unit tempering oil, relate in particular to the low viscous ethylene unit tempering oil of a kind of high aromatic hydrocarbons.
Background technology
In ethylene unit, quench oil system is the throat of ethylene unit, and it mainly contains energy-conservation and effect fractionation, and she directly connects cracking and compression two big units, and in the mid-way of forming a connecting link, the quality of its running is to device performance important.Quenching oil in quench oil system is the tower reactor heavy constituent cut of splitting gas after the cooling fractionation of quenching oil column, boiling range scope, at 220～500 ℃, is rich in a large amount of easily unsaturated aromatic hydrocarbon, styrenic, indenes class and aliphatic diolefine and the cycloolefin compounds of polymerization.Quenching oil is along with the prolongation of the residence time in system, in quencher, contact with Pintsch process gas condensation can occur, coking reaction, along with the carrying out of circulation, inferior condensation, coking reaction is constantly carried out, most of stable hydrocarbon wherein and aromatised fraction condensation are that resin and asphalt constantly raises chilling oil viscosity, cause quenching oil circulation pump operational efficiency to reduce, and then the heat transfer efficiency of reduction dilution steam generator, affect gasoline splitter separating effect, and bring difficulty to follow-up separating device operation, finally cause equipment to stop up, the normal operation of impact, plant energy consumption is increased.Therefore quenching oil viscosity is one of strict processing parameter of controlling of ethylene unit always.
A kind of wherein method that reduces quenching oil viscosity is in quenching oil, to add tempering oil.But the tempering oil adopting in domestic ethylene at present is mainly in harmonious proportion and is formed by furfural extract oil and 0# diesel oil.Furfural extract oil comprises and subtracts two extractions oil and subtract three extraction oil, and their viscosity is all higher, and that produces take China Petroleum & Chemical Co., Ltd. Maoming Branch subtracts two extractions oil and subtract three extraction oil as example, subtracts 40 ℃ of viscosity of two extractions oil at 100mm
2more than/s, subtract 40 ℃ of viscosity of three extraction oil at 500mm
2more than/s, and the lube oil finishing of the said firm takes first to take off the positive sequence technique dewaxing after aromatic hydrocarbons, and in the furfural extract oil of gained, the content of wax is higher, thereby conventionally subtracts two extraction oil freezing points more than 20 ℃, subtracts three extraction oil freezing points more than 30 ℃.In order to make modified oil viscosity and zero pour reach requirement, in tempering oil, the weight percent content of 0# diesel oil is generally 30～45%, but because diesel oil distillate density is little, light weight, after adding quench tower, most of diesel oil is gone to the top of quench tower, and needs the quenching oil of adjusting viscosity below quench tower, if Determination of Diesel Oil is large in tempering oil, the effective constituent that plays viscosity reduction effect is few on the contrary, causes the result of use of tempering oil undesirable; And the few tempering oil of diesel oil consumption, because viscosity and zero pour are low, easily solidifies winter, cause Automobile Transportation to unload not smoothly, and need heating to make it after melting just can be applied in quench oil system, and cause production work very complicated, also increase energy consumption.
On the other hand, furfural extract oil is a kind of important Industrial products, serves as lubricating oil, modified asphalt additive, additive for paper making and rubber filling oil.At present, market is very large to the demand of furfural extract oil, and usually supply falls short of demand, thereby it is considerably less to be applied to the amount of furfural extract oil of ethylene unit tempering oil, needs to find the raw material that replaces furfural extract oil.
The reaction product of being come by catalyst cracker is divided into several intermediates from separation column bottom enters: tower top is gasoline and rich gas, and side line has solar oil, heavy gas oil and recycle stock, and bottom product is slurry oil.Recycle stock is wherein FCC recycle oil, conventionally do not go out device as product, carry out freshening but return to catalyst cracker with part slurry oil, therefore refinery does not generally carry out periodic analysis to recycle stock, therefore the physico-chemical property of recycle stock unclear, does not more use it for and prepares ethylene unit tempering oil.
Summary of the invention
The object of this invention is to provide the low viscous ethylene unit tempering oil of a kind of high aromatic hydrocarbons.This ethylene unit tempering oil is compared with existing ethylene unit tempering oil, and aromaticity content is higher, more can effectively bring into play modified effect.
The object of the invention is to realize by following technical measures: the low viscous ethylene unit tempering oil of a kind of high aromatic hydrocarbons, it comprises the component of following mass percent:
FCC recycle oil: 70%～100%
Diesel oil: 0%～30%.
The FCC recycle oil adopting in the present invention is the intermediate product in catalytic cracking reaction in a kind of petroleum refining process.As can be seen from Table 1, it is similar to the constitutive property containing in quenching oil that FCC recycle oil contains the compositions such as bituminous matter, colloid and aromatic hydrocarbons, is all polar material, can have good consistency with quenching oil, and reach the object that reduces chilling oil viscosity.
The property analysis result of table 1 FCC recycle oil
FCC recycle oil of the present invention preferably adopts aromatic hydrocarbons massfraction more than 70%, and 40 ℃ of viscosity are at 50～70mm
2/ s, zero pour is all lower than the FCC recycle oil of 20 ℃.
The mass percentage content of the preferred component of the present invention is:
FCC recycle oil: 75%～100%
Diesel oil: 0%～25%.
The mass percentage content of the preferred component of the present invention is:
FCC recycle oil: 80%～100%
Diesel oil: 0%～20%.
Diesel oil described in the present invention can adopt solar oil, also can adopt the diesel oil that in petroleum refining process, each device produces, as: coker gas oil, catalytic diesel oil etc., the aromaticity content of these diesel oil is high, more approaching with chilling oil properties, can play in use more efficiently diluting effect.Described solar oil adopt 5# diesel oil, 0# diesel oil ,-10# diesel oil ,-20# diesel oil ,-35# diesel oil and-one or more mixing in 50# diesel oil etc.
The present invention compared with prior art has following unusual effect:
(1) in the present invention, take aromaticity content, the FCC recycle oil more than 70% is as forming the main ingredient of ethylene unit tempering oil, and in FCC recycle oil, aromaticity content is high, and 40 ℃ of viscosity are at 50～70mm
2between/s, lower than the viscosity of furfural extract oil, meet the low viscous requirement of the modified innage aromatic hydrocarbons of ethene.And that FCC recycle oil contains the compositions such as bituminous matter, colloid and aromatic hydrocarbons is similar to the constitutive property containing in quenching oil, be all polar material, can there is good consistency with quenching oil, reach the object that reduces chilling oil viscosity.
(2) in the present invention, the consumption of diesel oil is few, and the effective constituent that plays viscosity reduction effect that can effectively mix with quenching oil is in use many, the successful of viscosity reduction, and the while has also been reduced the cost of ethylene unit tempering oil, obtains better cost performance.
(3) zero pour of the diesel oil not only adopting in the present invention is low, and the zero pour of FCC recycle oil is below 20 ℃, its zero pour is lower than furfural extract oil, through repeatedly sampling analysis of contriver, when minimum, be-6 ℃ (in table 1), main ingredient with it as ethylene unit tempering oil, can make ethylene unit tempering oil be difficult for solidifying, and conveniently produces, manages defeated and Automobile Transportation.
Embodiment
Set forth in further detail by the following examples content of the present invention, but following embodiment is just for setting forth content of the present invention, rather than restriction, therefore any change in implication and the scope suitable with claims of the present invention, all should think to be included in the scope of claims.
Embodiment 1:
(1) 77 tons of FCC recycle oils are transported in Mixer pot.
(2) add 23 tons of coker gas oils to Mixer pot.
(3) start tank side stirrer, stir and within 1～2 hour, make it evenly to obtain ethylene unit tempering oil.
Embodiment 2:
(1) 79 tons of FCC recycle oils are transported in Mixer pot.
(2) add 21 tons of catalytic diesel oils to Mixer pot.
(3) start tank side stirrer, stir and within 1～2 hour, make it evenly to obtain ethylene unit tempering oil.
Embodiment 3:
(1) 80 tons of FCC recycle oils are transported in Mixer pot.
(2) add 20 tons of 0# diesel oil to Mixer pot.
(3) start tank side stirrer, stir and within 1～2 hour, make it evenly to obtain ethylene unit tempering oil.
Embodiment 4:
Take 100 tons of FCC recycle oils as ethylene unit tempering oil.
Embodiment 5:
(1) 70 tons of FCC recycle oils are transported in Mixer pot.
(2) add 30 tons of 0# diesel oil to Mixer pot.
(3) start tank side stirrer, stir and within 1～2 hour, make it evenly to obtain ethylene unit tempering oil.
Embodiment 6:
(1) 90 tons of FCC recycle oils are transported in Mixer pot.
(2) add 10 tons of 0# diesel oil to Mixer pot.
(3) start tank side stirrer, stir and within 1～2 hour, make it evenly to obtain ethylene unit tempering oil.
Table 2 embodiment and existing ethylene unit tempering oil physico-chemical analysis data
Aromatic hydrocarbons (C
a) and aromatic hydrocarbons correlation index be the important indicator of ethylene unit tempering oil, aromatic hydrocarbons (C
a) and aromatic hydrocarbons correlation index higher, illustrate that ethylene unit tempering oil performance is better, more can effectively reduce quenching oil viscosity.Shown in the result of table 2, the aromatic hydrocarbons (C in embodiment 1～5
a) and the value of aromatic hydrocarbons correlation index than the height of ethylene unit tempering oil of the prior art, the effect that performance of the present invention is described and reduces quenching oil viscosity is better than the ethylene unit tempering oil take furfural extract oil as main ingredient.
Claims (2)
1. the low viscous ethylene unit tempering oil of high aromatic hydrocarbons, is characterized in that, is made up of the component of following mass percent:
FCC recycle oil 70%～100%
Diesel oil 0%～30%;
Described FCC recycle oil adopts aromatic hydrocarbons massfraction more than 70%, and 40 ℃ of viscosity are at 50 ~ 70mm
2/ s, zero pour is all lower than the FCC recycle oil of 20 ℃.
2. the low viscous ethylene unit tempering oil of high aromatic hydrocarbons according to claim 1, is characterized in that, is made up of the component of following mass percent:
FCC recycle oil 75%～100%
Diesel oil 0%～25%.
3. the low viscous ethylene unit tempering oil of high aromatic hydrocarbons according to claim 2, is characterized in that, is made up of the component of following mass percent:
FCC recycle oil 80%～100%
Diesel oil 0%～20%.
4. according to the low viscous ethylene unit tempering oil of high aromatic hydrocarbons described in claim 1 or 2 or 3, it is characterized in that, described diesel oil adopts solar oil, coker gas oil or catalytic diesel oil.
5. the low viscous ethylene unit tempering oil of high aromatic hydrocarbons according to claim 4, is characterized in that, described solar oil adopt 5# diesel oil, 0# diesel oil ,-10# diesel oil ,-20# diesel oil ,-35# diesel oil and-one or more mixing in 50# diesel oil.
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| CN102408925B true CN102408925B (en) | 2014-07-09 |
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| CN104449826B (en) * | 2013-09-13 | 2016-05-25 | 中国石油化工股份有限公司 | A kind of method that reduces ethylene unit quench oil viscosity |
| CN107699300A (en) * | 2017-08-30 | 2018-02-16 | 中国石油化工股份有限公司 | A kind of cracking of ethylene chilling tempering oil |
| CN114479962B (en) * | 2020-10-26 | 2023-10-20 | 中国石油化工股份有限公司 | No. 180 environment-friendly ship fuel oil and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916122A (en) * | 2006-06-28 | 2007-02-21 | 中国石油集团工程设计有限责任公司抚顺分公司 | Quick cooling equipment for rapid reducing temperture of product from hydrotreating reaction of catalytic cracking gasoline |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916122A (en) * | 2006-06-28 | 2007-02-21 | 中国石油集团工程设计有限责任公司抚顺分公司 | Quick cooling equipment for rapid reducing temperture of product from hydrotreating reaction of catalytic cracking gasoline |
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| 乙烯裂解急冷调质油的研究;张清祥;《化学工程师》;19991231(第3期);59-60 * |
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